...
1) Install the mods in the normal way - Note you have to install RWM in the base dir, not a seperate one like the guide suggests.
So you should have something similar to:
D2 dir: /home/you/.wine/drive_c/Program Files/Diablo 2
RWM: /home/you/.wine/drive_c/Program Files/Diablo 2/data/global/excel/Runes.txt
RRM: /home/you/.wine/drive_c/Program Files/Diablo 2/data/local/lng/eng/expansionstring.tbl
/home/you/.wine/drive_c/Program Files/Diablo 2/data/local/lng/eng/patchstring.tbl
2) IMPORTANT: Cd to the base d2 directory: cd /home/you/.wine/drive_c/Program Files/Diablo 2
If you recall, windows has a box in shortcuts that says "run in". This is not present in Linux, the "run in" variable is taken from the current directory the terminal is in. This is the step I missed and without it, you won't be able to run the mods.
3)
wine Diablo II.exe -direct -txt -ns -w
(Or without the ns and w if you want sound and full screen

)
Hope that works!